Hello, I'm an expert in the field of beverages with a particular interest in the history of soft drinks. I'd be happy to help you with your question.
The oldest soft drink in the world is widely recognized to be
vinegar. Yes, vinegar is technically a soft drink because it is a liquid intended for human consumption and does not contain alcohol. The production of vinegar dates back to ancient times, with evidence suggesting that it was produced as early as 5000 BC in China. Vinegar is made through the fermentation of ethanol by acetic acid bacteria, which turns the ethanol into acetic acid, giving vinegar its characteristic sour taste.
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